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TOKSISITAS AKUT (LC50) SERBUK BOR (Cuttings) TERHADAP Daphnia sp. Effendi, Hefni; Emawan, Aditya Herry; Wardiatno, Yusli; Krisanti, Majariana
Bumi Lestari Journal of Environment Vol 12, No 2
Publisher : Udayana University

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Abstract

Research was aimed at determining toxicity of drilling cuttings towards Daphnia, revealed in LC50 96 hours, meaning that cuttings concentration cause 50% population of Daphnia within the period of 96 hour observation. LC50 96 hour is utilized for preliminary strategy of managing drilling cuttings. Static test was applied at the main bioassay experiment.  Mortality was as an indicator of toxicity.  Bioassay experiment refers to US-EPA (1991, 1996, 2002); Ziehl and Schmitt (2000).  Mortality and water quality fluctuation were observed at hours 2, 4, 6, 8, 24, 48, 72, and 96. Determination of LC50 96 hour was carried out by the method of Probit Analysis.  Manual count and software EPA Probit Analysis Version 1.5 were applied. LC50 96 hours cuttings towards Daphnia is 22.177 - 22,208 ppm.  This indicates that cuttings has almost non-toxic characteristic.  However, disposal of these cuttings needs oil content measurement.  If oil content meets regulation (? 10%), cuttings is allowed to be discharged to the surrounding terrestrial environment.
MORPHOLOGY AND CELL BIOMASS OF SPONGE Aaptos aaptos AND Ismet, Meutia Samira; Soedharma, Dedi; Effendi, Hefni
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 3, No 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Jurnal Ilmu dan Teknologi Kelautan Tropis

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Abstract

Aaptos aaptos and Petrosia sp. sponges are known for their ability to produce potential marine bioactive compound. As a metazoan animal with simple body structure, the morphology and it association with symbiont-bacteria could influence their bioactive compound both type and activity, as much as their habitat adaptation. In order to determine morphology and its cell biomass of Aaptos aaptos dan Petrosia sp., samples were taken from the West Pari Island, at 7 m depth. Preserved samples (in 4% formaldehyde) were examined using a histological mounting and centrifugation method to separate the cells fraction of sponge’s tissues. A. aaptos sponge has a soft body structure with 55.9% skeleton-forming fraction, 14.2% sponge cell fraction and 29.9% bacteria fraction. Meanwhile, Petrosia sp. sponge has a rigid body with dominant skeleton-forming fraction (68.6%), and lesser sponge cell and bacteria associated (19.7% and 11.7%, respectively).Keywords: A. aaptos, Petrosia sp, morphology, cell biomass
Konsentrasi C-organik dan substrat sedimen di perairan Pelabuhan Belawan Medan Yolanda, Yuni; Effendi, Hefni; Sartono, B
Jurnal Pengelolaan Lingkungan Berkelanjutan (Journal of Environmental Sustainability Management) JPLB, Vol 3, No 2 (2019)
Publisher : Badan Kerjasama Pusat Studi Lingkungan (BKPSL) se-Indonesia bekerjasama dengan Pusat Penelitian Lingkungan Hidup IPB (PPLH-IPB)

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Abstract

Penelitian ini bertujuan mengetahui konsentrasi C-organik dan substrat pada sedimen di perairan Pelabuhan Belawan, serta melihat korelasi antar keduanya. Lokasi penelitian dilakukan di DLKr dan DLKp Pelabuhan Belawan Medan dengan pengambilan sampel secara random sampling sebanyak 10 sampel. Analisis data menggunakan analisis korelasi Pearson product moment. Hasil penelitian menunjukkan konsentrasi C-organik berkisar 0,26–2,74%. Konsentrasi substrat pasir 61–99%, lumpur 1–29%, dan liat 0–18%. C-organik memiliki korelasi positif terhadap nilai interpretasi substrat lumpur (0,769), namun berkorelasi negatif terhadap substrat pasir (-0,816). Semakin halus substrat sedimen, kandungan C-organik akan semakin meningkat.
EXPLORATION OF SOFTCORAL AS ANTIOXIDANT AT PONGOK ISLAND, SOUTH BANGKA Apri, Rezi; Zamani, Neviaty P; Effendi, Hefni
JURNAL TEKNOLOGI PERIKANAN DAN KELAUTAN Vol 4, No 2 (2013): November 2013
Publisher : Fakultas Perikanan dan Ilmu Kelautan

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Abstract

Soft coral was a part of reef ecosystem that can produce secondary metabolic compounds, as a response to the environment to survive. The metabolic secundaris one of antioxidant. The purpose of this study to look at the compounds contained in the soft coral Sinularia sp and Lobophytum sp at Pongok Island, South Bangka as antioxidant at a depth of 3 meters and 9 meters. Phytochemical analysis of the study results showed that the soft coral Sinularia sp and Lobophytum spcontaining compounds Alkaloids, Flavonoids, Phenols Hydroquinone, Steroids, Triterpenoids, Tannins and saponin.
ANALISIS MUTU DAN KRITERIA KELAYAKAN DOKUMEN AMDAL DI KABUPATEN BOGOR DAN KOTA BOGOR Venita, Rachma; Effendi, Hefni; Wijayanto, Hari
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 5, No 1 (2015): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (352.752 KB) | DOI: 10.29244/jpsl.5.1.7

Abstract

The rapid development activities that occurred in Indonesia has the potential to put pressure on the environment. It therefore requires sustainable development efforts with one instrument is Environmental Impact Assessment (EIA). Along with the development and adjustment of environmental conditions, EIA policy has undergone several changes. With EIA policy changes, evaluation on EIA performance needs to be done. The performance evaluation conducted on 15 EIA documents EIA document issued by the District and City of Bogor in 2012 through 2014. The analytical method used is the analysis of the quality of the test quality criteria document and focused on quality test aspects of consistency, necessity and relevance, feasibility analysis with weighting criteria, Pearson correlation analysis of the two respondents certified appraiser to see the similarity assessment method. From the analysis it can be seen that the quality of the documents are best seen from the EIA documents to categories of tourist accommodation facilities with a score of 81 and the analysis of the eligibility criteria resulted that three documents are not worth the environment seen from discussion of the feasibility of the benchmarks in the EIA document, also PerMenLH 08 of 2013 carried out by equally from both respondents with a positive correlation results 0.681. Keywords: quality document, eligibility criteria, Bogor, Environment Impact Assesment (EIA)
ANALISIS SENSITIVITAS LINGKUNGAN OSCP (OIL SPILL CONTINGENCY PLAN) DI PESISIR SELATAN DELTA MAHAKAM, PROVINSI KALIMANTAN TIMUR Mursalin, Mursalin; Nurjaya, I Wayan; Effendi, Hefni
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 4, No 1 (2014): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1287.879 KB) | DOI: 10.29244/jpsl.4.1.84

Abstract

The research was one part of oil spill contingency plan (OSCP) developed for Delta Mahakam area, where oil & gas exploration and exploitation linked with rich biodiversity supporting coastal community livelihood. Environmental sensitivity  analysis for OSCP only do two early stages of OSCP scope, which integrated with the dangers of coastal vulnerability. This analysis mapped environmental component from oil pollution become sensitivity rangking as an effort to support response development strategies and priorities for the coastal resources protection. The aims of this research were (1) to establish environment sensitivity rank and (2) to identify primary factor supporting the environmental sensitivity for OSCP in south Delta Mahakam area. The result of analysis showed environmenal sensitivity was 62.37% (517.52 km), its mean very high sensitivity. Then the high sensitivity criteria was 11.31% (94 km). The criteria of medium sensitivity was 11.92% (99 km). While for low sensitivity and very low sensitivity respectively were 1.78% (15 km) and 12.64% (105 km). Based on Principal Component Analysis (PCA), 36.01%  variability was explained by axis of factor 1. The others variability 18.53% and 13.93% were explained by axis of the factor 2 and factor 3. Axis of factor 1 for coastal exposure (EK), oil residence index (OR), coastal type (TP), and biological resources (SH) had a quite large linear combinations coefficient, amounted to 0.94 (EK&OR), 0.83 (TP) and 0.75 (SH). This indicated a very high contribution for environmental sensitivity OSCP level drafting. On axis of factor 2, the linear coeffisien combinations for the resource utilization of port (PL) was 0.83 and settlement (PM) was 0.85. Axis of factor 3 contributed 0.75 and 0.66 on migas platform (PO) and placement of passive fishing gear/catchment area (AT). However, the utilization of coastal resources for PL, PM, PO and AT were on axis of factor 2 and factor 3 had a considerable distance with its SI variable. This possible caused by each variable percentage distribution which the value was very minor ranged 0.001-0.52%, so its not representated coastal resources elements closeness with SI variable in the study area.Keywords: Environmental Sensitivity, Oil Spill Contingency Plan, Mahakam Delta
Penggunaan Makrozoobentos Sebagai Indikator Status Perairan Hulu Sungai Cisadane, Bogor Rahayu, Dyah Muji; Yoga, Gunawan Pratama; Effendi, Hefni; Wardiatno, Yusli
Jurnal Ilmu Pertanian Indonesia Vol 20, No 1 (2015): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Anthropogenic pollution (organic matter and Hg) around Cisadane River upstream can affect the abundances of macrozoobenthos. The aim of this research was to identify the abundances of macrozoobenthos and feeding groups, and also to identify the status of waters based on macrozoobenthos community. The research was conducted on January to March in four locations in the upstream of Cisadane River, covering Cikuluwung (ST 1), Cisarua (ST 2), Curug Bitung (ST 3), and Lukut (ST 4). Samples were collected with kick net and Eckman Grab. The dominance macrozoobenthos are Bungona (171 ind/m2), Simulium (101 ind/m2), Cheumatopsyche (50 ind/m2), and Polypedilum (28 ind/m2). Based on feeding groups, the dominance are filtering collector and gatherer collector. Based on the Pollution Index and Heavy Metal Pollution Index (Hg) on sediment, the upstream of Cisadane River is low polluted whereas EPT Index and Signal showed that upstream of Cisadane River is moderate polluted.
DAYA DUKUNG LINGKUNGAN BERBASIS KEMAMPUAN LAHAN DI TUBAN, JAWA TIMUR Widiatmaka, Widiatmaka; Ambarwulan, Wiwin; Purwanto, Muhamad Yanuar Jarwadi; Setiawan4, Yudi; Effendi, Hefni
Jurnal Manusia dan Lingkungan (Journal of People and Environment) Vol 22, No 2 (2015)
Publisher : Pusat Studi Lingkungan Hidup Universitas Gadjah Mada

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Abstract

Evaluasi daya dukung lingkungan merupakan bagian dari upaya mewujudkan pembangunan berkelanjutan. Salah satu metoda evaluasi daya dukung lingkungan adalah evaluasi berbasis kemampuan lahan. Penelitian ini bertujuan untuk melakukan evaluasi daya dukung lingkungan berbasis kemampuan lahan di Tuban, Jawa Timur. Evaluasi dilakukan dengan mengkaji kesesuaian antara kemampuan lahan dengan penggunaan lahan aktual dan alokasi Pola Ruang dalam Rencana Tata Ruang Wilayah Kabupaten. Kemampuan lahan dievaluasi pada setiap Satuan Peta Lahan yang diperoleh dari survai lapangan tahun 2014. Penggunaan lahan aktual dianalisis menggunakan citra Landsat 8 OLI tahun peliputan 2013. Hasil analisis menunjukkan bahwa kemampuan lahan di wilayah penelitian berkisar dari kemampuan lahan kelas II sampai kelas VIII. Wilayah dengan kemampuan lahan yang memungkinkan untuk pengusahaan budidaya (kelas II-IV) mencakup 78,6% wilayah studi, sementara wilayah yang tidak memungkinkan untuk budidaya (kelas V-VIII) mencakup 21,4% wilayah studi. Faktor pembatas kemampuan lahan terdiri dari tekstur tanah, kedalaman efektif, drainase, lereng dan genangan/banjir. Saat ini, 32% wilayah di Kabupaten Tuban penggunaan lahannya sesuai dengan kemampuan lahannya, 66,4% wilayah digunakan melebihi kemampuan lahannya. Dalam hal alokasi lahan pada pola ruang, 67,3% wilayah dialokasikan penggunaan lahannya sesuai dengan kemampuan lahannya, sedangkan 31% dialokasikan melebihi kemampuan lahannya. Temuan ini dapat digunakan untuk mengontrol penggunaan lahan di Kabupaten Tuban dan menjadi bahan revisi Rencana Tata Ruang Wilayah Kabupaten agar penggunaan lahan dialokasikan sesuai dengan kemampuan lahannya.
BACTERIAL SYMBIONT BIOACTIVE COMPOUND OF SOFT CORAL Sinularia flexibilis AND S. polydactyla Rozirwan, .; Bengen, Dietriech G.; Chaidir, .; Zamani, Neviaty P.; Effendi, Hefni
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol 7, No 2 (2015): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Jurnal Ilmu dan Teknologi Kelautan Tropis

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Abstract

Symbiont bacteria on soft coral can produce bioactive compounds that plays an important role in chemical ecology and as a marine natural product. The purpose of this study was to find and characterize the antibacterial activities of active compounds extracted from bacterial symbionts of soft coral S. flexibilis and S. polydactyla. The methods used in this study were culture and isolation of bacterial symbionts, extraction of compounds, antibacterial bioassay, and identification of bioactive compounds using the LC-MS analyses. Four isolates of bacterial symbionts were obtained from two samples of soft corals, 2 isolates of Pseudomonas diminuta (A1) and Edwardsiellla hoshinae (A2) from soft coral S. flexibilis, and 2 isolates of E. hoshinae (B1) and P. acidovorans (B4) from S. polydactila. Antibacterial activity were found only from the extracts of bacterial symbionts P. diminuta (A1) and from  S. flexiblis about 10.16 ± 0.3mm (for B. subtilis), 8.66 ± 0.8 mm (E. coli) and 9.86 ± 1.7mm (S. dysentri). No antibacterial activity found from the extracts of S. polydactyla. The results of LC MS analysis showed that the group of diterpenes sinularin produced by soft corals S. flexibilis and bacterial symbionts isolates of P. diminuta (A1).Keywords:  Bacterial Symbiont, Bioactive Compound, Antibacterial Activity, Soft Coral, Sinularia flexibilis, Sinularia polydactyla
Abnormal Shape And Size Of Scenedesmus Armatus AS AN Indicator Of Copper And Cadmium Pollution Effendi, Hefni
Jurnal Ilmu-Ilmu Perairan dan Perikanan Indonesia Vol 3, No 2 (1995): Desember 1995
Publisher : Institut Pertanian Bogor

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Abstract

Penelitian( mengenai pengaruh Copper dan Cadmium terhadap Scenedesmus armatus dilakukan pada botol flask. Penelitian ini mengacu pad a standar ISO (1989), pada kadar nutrien (nitrat dan fosfat) tinggi dan temperatur inkubasi rendah. Pertumbuhan S. armatus terhambat oleh keberadaan Cu dan Cd yang melebihi kadar yang dibutuhkan. Tanda-tanda terpengaruhnya terlihat melalui: penurunan kepadatan sel, penurunan nilai absorbansi, penurunan pertumbuhan rata-rata, penurunan kecepatan fotosintesa, pembengkakan sel, sel menjadi cacat dan ketidakteraturan organella. Lebar S. armatus meningkat dengan nyata akibat perlakuan Cu dan Cd. Pada temperatur inkubasi lSoC ukuran sel S. armatus juga meningkat secara nyata. Pada kadar nitrat dan fosfat tinggi, S. armatus tumbuh lebih cepat daripada pada kondisi stan dar dan pengaruh toksikan menjadi berkurang. Pada temperatur inkubasi rendah S. annatus memperlihatkan pertumbuhan yang lebih larnbat dan dalam beberapahal toksisitas Cd berkurang.Kata-kata kunci: Scenedesmus armatus, copper, cadmium, coenobium, morfologi.